Definition of clocker noun from the Oxford Advanced Learner's Dictionary

     

    clocker

     noun
    noun
    BrE BrE//ˈklɒkə(r)//
     
    ; NAmE NAmE//ˈklɑːkər//
     
    (informal)
     
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  1. 1(British English) a person who illegally changes a car’s milometer so that the car seems to have travelled fewer miles than it really has
  2. 2(North American English) a person who sells illegal drugs, especially cocaine or crack